Electronis Discussion
0 votes
19 views

An infinitely long uniform solid wire of radius $a$ carries a uniform dc current of density $\overrightarrow{j}$.

The magnetic field at a distance $r$ from the center of the wire is proportional to

  1. $r$ for $r\lt a$ and $\frac{1}{r^2}$ for $r\gt a$
  2. $0$ for $r\lt a$ and $\frac{1}{r}$ for $r\gt a$
  3. $r$ for $r\lt a$ and $\frac{1}{r}$ for $r\gt a$
  4. $0$ for $r\lt a$ and $\frac{1}{r^2}$ for $r\gt a$
in Electronic Devices by (15.8k points)
recategorized by | 19 views

Please log in or register to answer this question.

Answer:
Welcome to GO Electronics, where you can ask questions and receive answers from other members of the community.
1,174 questions
78 answers
11 comments
43,917 users